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From: Ken Brown <kbrown AT cornell DOT edu>
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Date: Thu, 22 Mar 2018 17:47:59 -0400
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On 3/7/2018 3:15 PM, Jon Turney wrote:
> Yeah, this looks like an ordering problem between libxml2 and 
> libfontconfig-common.
> 
>> $ cat /etc/postinstall/fontconfig_dtd.sh
>> if [ -x /usr/bin/xmlcatalog ] ; then
>>     /usr/bin/xmlcatalog --noout --add "system" "fonts.dtd" 
>> /usr/share/xml/fontconfig/fonts.dtd /etc/xml/catalog
>> fi
>>
>> $ cat /etc/postinstall/libxml2.sh
>> if test ! -f /etc/xml/catalog; then
>>         /bin/mkdir -p /etc/xml
>>         /usr/bin/xmlcatalog --noout --create /etc/xml/catalog
>> fi
> 
> Not sure how to fix this.
> 
> I think there's no actual dependency of libfontconfig-common on 
> xmlcatalog, but we lack a triggering mechanism to say "run this script 
> when this other package is installed"

/etc/postinstall/fontconfig_dtd.sh could check whether 
/etc/postinstall/libxml2.sh exists.  If so, it could run it and then add 
'.done' so it isn't run again.

Ken

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